I'm thinking about: what is the purpose of the map for dnd gameplay? Should the map, however presented, just be a layout of rooms or most prominent features of an outdoor space, or try to present a scene to the players, with specific objects (tables, bookcases, etc). And in presenting a scene, the players become more immersed in it? For example, I found a video where someone was talking about how in Foundry you can associate sounds like running water with certain parts of the map, and those sounds will automatically play when the tokens are close to it. Is that better than a DM having a note to describe the sound of running water? Would the next step be fully 3d virtual environments?
I think map-as-game aid and map-as-immersion are meaningfully different approaches to the game, even if the latter also accomplishes what the former is trying to do. And probably you need to know what your users want maps for when designing and selling a VTT. I could see WOTC imagining that people want a really immersive experience, but I wonder if that undercuts other aspects of the appeal of the game